Design and predicting efficiency of highly nonlinear hollow cylinders switched reluctance motor

El-Kharashi, Eyhab

doi:10.1016/j.enconman.2007.04.006

Cited by 10 publications

(6 citation statements)

References 18 publications

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“…Hence, new research on these conventional designs can add to knowledge of their advantages, disadvantages, or limitations of torque capability and maximum efficiency (El-Kharashi, 2006, 2007Michaelides, 1994). From this point of view, research into SRMs is moving towards finding new designs which provide some new advantage, or ameliorate a particular problem suffered by the conventional equal-space teeth design.…”

Section: Introductionmentioning

confidence: 99%

Shaping the stator teeth of an isolated stator sections switched reluctance motor to deliver high output torque

El-Kharashi

Salminen

2009

IJPEC

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In the isolated stator sections 6/8 SRMs, wide stator teeth produce high flux, yet not all of this flux generates output torque. For proper design of the 6/8 SRM, the rotor teeth widths are less than the stator teeth widths, which means that not all the flux in the stator transfers to the rotor. In this study, the stator teeth are tapered to optimise the stator flux transfer from the stator to the rotor in order to increase the output torque. A comparison between the torque of the SRM with and without tapered stator teeth is presented.Reference to this paper should be made as follows: El-Kharashi, E. and Salminen, P. (2009) 'Shaping the stator teeth of an isolated stator sections switched reluctance motor to deliver high output torque', Int. Egypt. His research interests include modelling, simulation, control of electromechanical drive systems, electrical traction, neural network, power systems; theory, analysis and design of novel electrical machines.

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Section: Introductionmentioning

confidence: 99%

Shaping the stator teeth of an isolated stator sections switched reluctance motor to deliver high output torque

El-Kharashi

Salminen

2009

IJPEC

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“…However, one of the motors that is considered the most interesting is the switching reluctance machine (SRM). When compared to other industrial motors, this motor is considered simple in design [7]. As a consequence, several applications and research studies have been performed [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

PV Generator-Fed Water Pumping System Based on a SRM with a Multilevel Fault-Tolerant Converter

et al. 2022

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This paper presents a pumping system supplied by a PV generator that is based on a switched reluctance machine (SRM). Water pumping systems are fundamental in many applications. Most of them can be used only during the day; therefore, they are highly recommended for use with PV generators. For the interface between the PV panels and the motor, a new multilevel converter is proposed. This converter is designed in order to ensure fault-tolerant capability for open switch faults. The converter is based on two three-level inverters, with some extra switches. Moreover, to reduce the number of switches, the converter is designed to provide inverse currents in the motor windings. Due to the characteristics of this motor, the inverse currents do not change the torque direction. In this way, it was possible to obtain an SRM drive with fault-tolerant capability for transistor faults; it is also a low-cost solution, due to the reduced number of switches and drives. These characteristics of fault-tolerant capability and low cost are important in applications such as water pumping systems supplied by PV generators. The proposed system was verified by several tests that were carried out by a simulation program. The experimental results, obtained from a laboratory prototype, are also presented, with the purpose of validating the simulation tests.

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“…Shortening the flux path in the proposed modified design is done here by two methods [5][6][7]: -Changing the shape of the magnetic circuit by bringing nearer the stator teeth as explained before. -Changing the windings configuration by making each two coils of each phase neighbor as shown in Fig.…”

Section: The Principle Of Shortening the Flux Pathsmentioning

confidence: 99%

Reconstruction of the Switched Reluctance Motor Stator

El-Kharashi¹,

Hassanien²

2012

Journal of Electrical Engineering

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The paper re-designs the conventional 6/8 switched reluctance motor (SRM) by a particular way to minimize the losses. The flux loops are shortened by making each two stator teeth incorporated in one magnetic circuit only. Subsequently the flux does not cross in some iron parts of the stator core backs. These unused iron sections are taken off consequently the iron losses decreased. Now the stator consists of three separated sections and they are fixed inside non-magnetic cylinder. The copper losses also are decreased because less copper windings are used to produce the same amount of the output torque as the flux paths become short then the flux density increases. The analysis and comparison of the 6/8 SRM before and after the re-design process are presented. A m files Matlab software is used to simulate the dynamic performance. Then the paper proceeds to examine different control techniques to the new design. The hysteresis and PI controllers are used as classical method to control the SRM. Then the artificial neural network (ANN) is used to test the new control techniques.

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Design and predicting efficiency of highly nonlinear hollow cylinders switched reluctance motor

Cited by 10 publications

References 18 publications

Shaping the stator teeth of an isolated stator sections switched reluctance motor to deliver high output torque

Shaping the stator teeth of an isolated stator sections switched reluctance motor to deliver high output torque

PV Generator-Fed Water Pumping System Based on a SRM with a Multilevel Fault-Tolerant Converter

Reconstruction of the Switched Reluctance Motor Stator

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